Refer to the data of lizard lengths in Exercise 9.11. (a) Determine a 90% confidence interval for
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(a) Determine a 90% confidence interval for the population standard deviation a.
(b) Should H0: σ = 9 be rejected in favor of H1: σ ≠ 9 at α = .10? [Answer by using your result in part (a).]
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a A 90 confidence interval for is given by where df n 1 For the lizard length ...View the full answer
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Related Book For
Statistics Principles And Methods
ISBN: 9780470904114
7th Edition
Authors: Richard A. Johnson, Gouri K. Bhattacharyya
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